GB1249728A - Improvements in or relating to glass ceramic materials - Google Patents

Improvements in or relating to glass ceramic materials

Info

Publication number
GB1249728A
GB1249728A GB5075569A GB5075569A GB1249728A GB 1249728 A GB1249728 A GB 1249728A GB 5075569 A GB5075569 A GB 5075569A GB 5075569 A GB5075569 A GB 5075569A GB 1249728 A GB1249728 A GB 1249728A
Authority
GB
United Kingdom
Prior art keywords
sio
alpo
examples
glass ceramic
relating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5075569A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schott AG
Carl Zeiss AG
Original Assignee
Jenaer Glaswerk Schott and Gen
Carl Zeiss AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jenaer Glaswerk Schott and Gen, Carl Zeiss AG filed Critical Jenaer Glaswerk Schott and Gen
Publication of GB1249728A publication Critical patent/GB1249728A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0018—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and monovalent metal oxide as main constituents
    • C03C10/0027—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and monovalent metal oxide as main constituents containing SiO2, Al2O3, Li2O as main constituents
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0036—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and a divalent metal oxide as main constituents
    • C03C10/0045—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and a divalent metal oxide as main constituents containing SiO2, Al2O3 and MgO as main constituents
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
    • C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions

Abstract

1,249,728. Treating glass ceramics. CARLZEISS-STIFTUNG, [trading as JENAER GLASWERK SCHOTT & GEN]. 15 Oct., 1969 [23 Oct., 1968], No. 50755/69. Heading ClM. A transparent glass ceramic of composition (weight per cent): 50 - 65 SiO 2 21 - 28 Al 2 O 3 0 - 10 P 2 O 5 1À5 - 5 Li 2 O 0 - 2 MgO 0 - 8 ZnO 0À5 - 5 TiO 2 1 - 3 ZrO 2 0 - 1 Na 2 O 0À5 - 1 As 2 O 3 , wherein SiO 2 : (AlPO 4 + LiAlO 2 + MgAl 2 O 4 + ZnAl 2 O 4 ) = 1À2-2À1 : 1, (SiO 2 + AlPO 4 ) # 71, (MgO+ZnO) # 2, and (SiO 2 +AlPO 4 +LiAlO 2 + ZnAl 2 O 4 + MgAl 2 O 4 ) # 90, is treated with a Li 2 SO 4 /K 2 SO 4 salt melt for 1-10 hours at 650-800‹ C. so as to strengthen it. The Li content is preferably higher than, most preferably at least twice, the K-content of the melt. A number of composition examples and examples of treatment schedules are given. The glasses of the examples all had a yellowish tinge.
GB5075569A 1968-10-23 1969-10-15 Improvements in or relating to glass ceramic materials Expired GB1249728A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681803540 DE1803540B2 (en) 1968-10-23 1968-10-23 PROCESS FOR MANUFACTURING TRANSPARENT CERAMIC GLASS WITH LOW THERMAL EXTENSION COEFFICIENTS AND HIGH MECHANICAL STRENGTH

Publications (1)

Publication Number Publication Date
GB1249728A true GB1249728A (en) 1971-10-13

Family

ID=5710724

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5075569A Expired GB1249728A (en) 1968-10-23 1969-10-15 Improvements in or relating to glass ceramic materials

Country Status (3)

Country Link
DE (1) DE1803540B2 (en)
FR (1) FR2021382A1 (en)
GB (1) GB1249728A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0587979A1 (en) * 1992-09-14 1994-03-23 Kabushiki Kaisha Ohara Low expansing transparent crystallized glass-ceramic
GB2284655A (en) * 1993-09-21 1995-06-14 Gec Alsthom Ltd Glass-ceramic armour
EP1146018A1 (en) 2000-04-08 2001-10-17 Schott Glas Floated flat glass
CN110655332A (en) * 2018-06-29 2020-01-07 比亚迪股份有限公司 Composition and method for chemically strengthened glass and chemically strengthened glass
US11261125B2 (en) 2015-03-24 2022-03-01 Corning Incorporated High strength, scratch resistant and transparent glass-based materials

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0587979A1 (en) * 1992-09-14 1994-03-23 Kabushiki Kaisha Ohara Low expansing transparent crystallized glass-ceramic
GB2284655A (en) * 1993-09-21 1995-06-14 Gec Alsthom Ltd Glass-ceramic armour
GB2284655B (en) * 1993-09-21 1997-08-13 Gec Alsthom Ltd Glass-ceramic armour
EP1146018A1 (en) 2000-04-08 2001-10-17 Schott Glas Floated flat glass
US6846760B2 (en) 2000-04-08 2005-01-25 Schott Glas Flat float glass
US11261125B2 (en) 2015-03-24 2022-03-01 Corning Incorporated High strength, scratch resistant and transparent glass-based materials
US11267747B2 (en) 2015-03-24 2022-03-08 Corning Incorporated High strength, scratch resistant and transparent glass-based materials
US11739021B2 (en) 2015-03-24 2023-08-29 Corning Incorporated High strength, scratch resistant and transparent glass-based materials
US11919801B2 (en) 2015-03-24 2024-03-05 Corning Incorporated High strength, scratch resistant and transparent glass-based materials
CN110655332A (en) * 2018-06-29 2020-01-07 比亚迪股份有限公司 Composition and method for chemically strengthened glass and chemically strengthened glass

Also Published As

Publication number Publication date
DE1803540B2 (en) 1972-01-13
FR2021382A1 (en) 1970-07-24
DE1803540A1 (en) 1970-07-02

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